<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box
        {
            width: 400px;
            height: 300px;
            background-color: red;
            box-shadow: 5px 5px 10px 10px green , 15px 15px 10px 10px orange,20px 20px 10px 10px blue;
        }
        .container
        {
            width: 200px;
            height: 100px;
            margin-top: 100px;
            text-shadow: 10px 10px 3px red,20px 20px 3px orange,30px 30px 3px blue;
        }
    </style>
</head>
<body>
    <div class="box">
    </div>
    <div class="container">
      <h1>我是陈钦</h1>
    </div>
</body>
</html>